Loading arms allow the transfer of fluid to and from the tank via a system made up of pipe, hose, and/ or valves. When transferring a pressurized fluid, a liquid loading arm is needed and at times a vent line. Pressure take a look at to the complete pipe system https://lpgservicestations93604.myparisblog.com/35675141/little-known-facts-about-lpg-station-piping-system